Rehash Meaning: Definition, Examples, and Translations
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rehash
[riหหhรฆส ]
Definition
computing term
To rehash means to process or reorganize data using a different hashing function. In computing, it often refers to changing the method used to compute hash values for data in a data structure like a hash table. This action is typically performed when there is a need to reduce collisions or improve performance in terms of accessing data. Rehashing can also be applied to various contexts outside of computing, indicating a reevaluation or reworking of ideas.
Synonyms
Examples of usage
- We need to rehash the algorithm to improve its efficiency.
- After encountering too many collisions, the system was programmed to rehash the data.
- The developer decided to rehash the code for better optimization.
Translations
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Interesting Facts
Literature
- Writers sometimes 'rehash' themes from their previous works to explore them in new contexts or with different insights.
- Many popular films and shows 'rehash' classic stories, providing modern twists to tales that resonate with contemporary audiences.
- This concept often receives criticism in literary circles, as some believe it reflects a lack of originality.
Pop Culture
- Remakes of movies or songs are often seen as a rehash of earlier works, drawing both praise and criticism for their attempts to revive nostalgia.
- TV series often have 'rehash' episodes where previous storylines are revisited, catering to fans who enjoy familiar content.
- Social media trends can often feature 'rehashes' of old challenges, reminding users of the fun they had previously.
Technology
- In software development, 'rehashing' might refer to updating or modifying existing code to improve performance or adapt to new requirements.
- Some computer science concepts involve 'rehashing' data structures to optimize search and retrieval processes.
- Rehashing in data management ensures that previously stored information is reformulated for better efficiency in databases.
Origin of 'rehash'
Main points about word origin
- The word 'rehash' originated in the late 19th century and was initially used in the context of cooking, particularly referring to leftover food.
- The 'hash' part comes from a French word meaning to chop or hash up, reflecting the idea of mixing things together again.
- Over time, it began to refer more broadly to the act of reworking existing ideas or materials rather than just food.
The term 'rehash' originated in the late 20th century within computer science, closely associated with hashing, which is a fundamental concept in computer programming and data management. The word 'hash' is derived from the act of chopping or mixing together, and in a computing context, it refers specifically to a method of distributing data across various locations based on a hash function. As the technology and its applications evolved, particularly in data structures, the idea of 'rehashing' emerged as a solution for improving the efficiency of data retrieval and storage. The prefix 're-' denotes a repeat or revisitation of the hashing process, emphasizing the corrective or optimizing intention behind the action. Thus, 'rehash' encapsulates both its computing roots and its more general application in revisiting and refreshing ideas or methodologies in numerous fields.